// SPDX-License-Identifier: GPL-2.0 /* * QNX4 file system, Linux implementation. * * Version : 0.2.1 * * Using parts of the xiafs filesystem. * * History : * * 28-05-1998 by Richard Frowijn : first release. * 20-06-1998 by Frank Denis : basic optimisations. * 25-06-1998 by Frank Denis : qnx4_is_free, qnx4_set_bitmap, qnx4_bmap . * 28-06-1998 by Frank Denis : qnx4_free_inode (to be fixed) . */ #include <linux/buffer_head.h> #include <linux/bitops.h> #include "qnx4.h"
unsigned long qnx4_count_free_blocks(struct super_block *sb) { int start = le32_to_cpu(qnx4_sb(sb)->BitMap->di_first_xtnt.xtnt_blk) - 1; int total = 0; int total_free = 0; int offset = 0; int size = le32_to_cpu(qnx4_sb(sb)->BitMap->di_size); struct buffer_head *bh; while (total < size) { int bytes = min(size - total, QNX4_BLOCK_SIZE); if ((bh = sb_bread(sb, start + offset)) == NULL) { printk(KERN_ERR "qnx4: I/O error in counting free blocks\n"); break; } total_free += bytes * BITS_PER_BYTE - memweight(bh->b_data, bytes); brelse(bh); total += bytes; offset++; } return total_free; }Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 112 | 79.43% | 3 | 42.86% |
| Akinobu Mita | 21 | 14.89% | 1 | 14.29% |
| Brian Gerst | 6 | 4.26% | 1 | 14.29% |
| Linus Torvalds | 1 | 0.71% | 1 | 14.29% |
| Anders Larsen | 1 | 0.71% | 1 | 14.29% |
| Total | 141 | 100.00% | 7 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 117 | 76.97% | 4 | 36.36% |
| Akinobu Mita | 21 | 13.82% | 1 | 9.09% |
| Brian Gerst | 6 | 3.95% | 1 | 9.09% |
| Al Viro | 3 | 1.97% | 1 | 9.09% |
| Christoph Hellwig | 2 | 1.32% | 1 | 9.09% |
| Anders Larsen | 1 | 0.66% | 1 | 9.09% |
| Greg Kroah-Hartman | 1 | 0.66% | 1 | 9.09% |
| Linus Torvalds | 1 | 0.66% | 1 | 9.09% |
| Total | 152 | 100.00% | 11 | 100.00% |